CN1305939C - Preparation method and uses of radiation modified polyolefinic thermoplastic elastomer blending resin - Google Patents
Preparation method and uses of radiation modified polyolefinic thermoplastic elastomer blending resin Download PDFInfo
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Abstract
The present invention discloses a preparation method and a purpose for radiation modified polyolefin thermoplastic elastomer blending resin. First, polyolefin thermoplastic elastomer blending resin is pre-radiated by gamma-rays or cathode beams; then, a cross-linking reaction is further generated by the polyolefin thermoplastic elastomer blending resin which is pre-radiated with a reaction processing method under a molten state to prepare modified polyolefin thermoplastic elastomer blending resin. The radiation modified polyolefin thermoplastic elastomer blending resin comprises 50 to 90 % of ethylene-alpha-olefin copolymers and 10 to 50 % of ethylene-mono-substituted alpha-olefin copolymers. The radiation modified polyolefin thermoplastic elastomer blending resin of the present invention can be used for substituting the PVC material used by the traditional disposable infusion device, and can overcome many defects of PVC infusion devices. The radiation modified polyolefin thermoplastic elastomer blending resin is a fire-new medical material.
Description
Technical field
The present invention relates to the polyolefinic thermoplastic elastomer blending resin preparation method, especially a kind of preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin.
Background technology
Disposable transfusion device mainly adopts the manufacturing of polyvinyl chloride (PVC) material at present.The part that directly contacts with soup particularly is as Perfusion drip funnel, transfusion catheter etc.Make infusion set with the PVC material advantages such as production is simple, cost is low, easy bonding are arranged.
From the seventies in 20th century, countries in the world to the application start of PVC transfusion device arguement.The focus of arguement is: plasticizer phthalic acid di-isooctyl (DEHP) is to human safety hidden danger, PVC material absorption some drugs and discarded PVC three aspects that influence to environmental ecology.Owing to itself be crumbly mass, PVC need add 20-50% even more softening agent DEHP when being processed into soft goods.In transfusion device and soup contact process, the DEHP on surface (also comprising the multiple containing metal that adds in the course of processing or the stablizer of heavy metal ion compound) is washed away by liquid, brings human body into.And inner DEHP is brought into human body once more to surface transport.Go round and begin again, DEHP accumulates in human body.Experiment shows that DEHP causes the rat liver cancer rate up to more than 90%, and DEHP is estrogenic chemicals, can cause childhood development unusual behind normal contact and the excessive absorption human body, young girl's precocity, boy's hypoevolutism, degradation under the health psychological quality.Simultaneously PVC makes the management of hospital increase difficulty to the adsorption of some drugs (as pannonit, taxol, iodine ammonia ketone, stable etc.).Depleted PVC is buried or can produce dioxin gas, serious environment pollution in general temperature (below 600 ℃) burning.
Adopt polyvinyl chloride that the shortcoming of following several respects is arranged as disposable transfusion device: the residual vinyl chloride monomer that minute quantity is arranged in (1) polyvinyl chloride (PVC) RESINS, this compound has been proved to be carcinogenic substance, and people's healthy meeting is brought detrimentally affect; (2) in order to obtain the soft PVC goods, must use softening agent (various organic esterses man-hour adding, as dimixo-octyl phthalate), the softening agent that adds in storage, transportation or use behind the product molding can move out gradually, the softening agent that is extracted in infusion process can pollute soup, and with soup generation chemical reaction, generate objectionable impurities, damage patient's healthy and result of treatment to a certain extent.(3) for preventing that polyvinyl chloride from adding the thermolysis in man-hour, usually be added with the compound used as stabilizers of multiple containing metal or heavy metal ion, preventing in the course of processing and thermal destruction and color change take place thereafter, these metals or heavy metal compound are extracted to enter behind the human body in infusion process has harm to people healthy; (4) polyvinyl chloride adds and can decompose the hydrogenchloride that produces trace man-hour, and processing units is caused corrosion, operator's health is brought threat, and cause environmental pollution; (5) depleted polyvinyl chloride processing meeting causes severe contamination to environment; (6) disposable transfusion device of Production of PVC can not adopt gamma-radiation or electron beam irradiation method to carry out sterilising treatment, because of gamma-radiation or electron beam can cause the decomposition of pvc material, can only adopt ethylene oxide sterilizing.Adopt ethylene oxide sterilizing to have the dead angle sometimes, make the sterilization of goods be difficult for thoroughly.The present disposable transfusion device of selling on the China market, its pure leachable, reducing substance and zinc content surpass the standard GB15593-1995 that country formulates, even also can cause in various degree harm to human and environment below the mark.The above-mentioned transfusion device that contains softening agent and heat stabilizing system has in U.S. Pat 4505708 with the PVC material to be described.
Because polyvinyl chloride contacts the side effect and the potential toxicity of certain degree with human body, developed country just eliminates with the speed of 15-17% every year, seeks new alternative macromolecular material.Developed countries such as Europe, the U.S. and Japan have begun to cut down in a large number the consumption of polyvinyl chloride in the medical macromolecular materials field.For example, the European Community has made the annual consumption of cutting down polyvinyl chloride of regulation, and the reduction amplitude reaches 17%.At present, developed country has dropped into great amount of manpower and material resources and financial resources research, has developed the equivalent material of polyvinyl chloride, equivalent material should have good processing characteristics, the monomer of synthetic materials is nontoxic, goods add need not add softening agent and thermo-stabilizer man-hour, the disposable transfusion device of producing can adopt gamma-radiation or electron beam irradiation method to carry out sterilising treatment, environmentally safe during offal treatment.
Polyolefinic thermoplastic elastomer blending resin has that raw material is easy to get, cheap, comprehensive physical and mechanical properties is good, resistance to chemical attack, nontoxic, be easy to many advantages such as processing and sterilization.But the intensity of polyolefinic thermoplastic elastomer blending resin is not high, and its range of application is very restricted.As described in disclosed patented technology in the Chinese invention patent " a kind of crosslinked polyethylene insulated power cable " (application number 01106422.6), improve the intensity and the ageing-resistant performance of polyolefin articles by cross-linking radiation.But the method for this direct cross-linking radiation can make polyolefine material lose thermoplasticity and processing characteristics, is not suitable for the polyolefinic thermoplastic elastomer blending resin of undressed one-tenth goods is still carried out modification.And for example disclosed patented technology is described in the Chinese invention patent " preparation method of functional polyolefin resin " (application number 03142815.0), with electron beam or gamma-radiation polyolefin resin is carried out pre-irradiation and handles; With the polyolefin resin of pre-irradiation and function monomer and carry out mechanically mixing to electronics reagent; Make polyolefin resin at molten state and function monomer generation graft reaction with the reaction extrusion method, obtain the polyolefin resin of radiation modification.Function monomer and the introducing of giving electronics reagent make the security of the modified resin that this method prepares reduce greatly, are not suitable as medical material.
Summary of the invention
Technical problem to be solved by this invention is, adopts the method for irradiation to prepare a kind of have favorable mechanical performance, processing characteristics and safety performance, is used to make the preparation method of the radiation modified polyolefinic thermoplastic elastomer blending resin of disposable transfusion device.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: adopt gamma-radiation or electron beam to polyolefinic thermoplastic elastomer blending resin irradiation, produce crosslinked needed free radical precursor construction, make the polyolefinic thermoplastic elastomer blending resin of handling through pre-irradiation further crosslinked under molten state with the reaction method for processing then, improve its intensity, to satisfy the requirement of strength of disposable transfusion device, be applied to the transfusion device field in order to substitute traditional PVC material to macromolecular material.
Described polyolefinic thermoplastic elastomer blending resin is that weight percent is the blend of the ethene-alpha-olefin copolymer of 50%-90% and the ethene of 10%-50%-single substituted alpha-alkene multipolymer.
Described ethene-alpha-olefin copolymer is a kind of in ethylene-propylene copolymer, ethylene-butene copolymer, ethene-hexene copolymer or the ethylene-octene copolymer resin; Described ethene-single substituted alpha-alkene multipolymer is a kind of in ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer or the ethylene-styrene copolymer resin.
Adopt Co-60 as irradiation source, the dosage range of irradiation is 0.2-200KGy; Rumbatron is an irradiation source, and the dosage range of electron beam is 0.2-200KGy.Compare with matrix resin, the tensile strength of the polyolefinic thermoplastic elastomer blending resin of radiation modification and modulus, flexural strength and modulus, shock strength significantly improve.
The pre-irradiation thing reacts processing in response type twin screw extruder, kneader, Ban Buli (Banbury) mixing machine etc.Temperature of reaction is controlled in the 100-260 ℃ of scope.
The modified polyolefinic thermoplastic elastomer blending disposable transfusion device that utilized material preparation of the present invention.The transfusion catheter up and down and the dropping funnel of described disposable transfusion device need extrusion moulding and extrusion and blow molding respectively, and other parts can adopt auxiliary products.Adopt solvent welding between each parts, solvent for use is pimelinketone or trichloromethane.
The invention has the beneficial effects as follows: the monomer ethylene of synthesis of polyolefins thermoplastic elastic material, alpha-olefin, single substituted alpha-alkene are nontoxic raw materials, do not need to add softening agent and thermo-stabilizer when Thermoplastic Elastomer, Olefinic materials processing becomes goods fully, thoroughly avoided the migration of softening agent that the PVC disposable transfusion device exists and thermo-stabilizer and separate out and the potential safety hazard brought.The Thermoplastic Elastomer, Olefinic disposable transfusion device of producing can adopt gamma-radiation or electron beam irradiation method to carry out sterilising treatment, and environmentally safe during offal treatment meets the requirement of human society to sustainable development.Adopt gamma-radiation or electron beam to polyolefine ardent hope property elastomer blending resin irradiation, produce crosslinked needed free radical precursor construction, make the polyolefinic thermoplastic elastomer blending resin of handling through pre-irradiation further crosslinked under molten state with the reaction method for processing then, improve its intensity, and its performance can be regulated arbitrarily within the specific limits, to satisfy the performance requriements of disposable transfusion device, be applied to the transfusion device field in order to substitute traditional PVC material to macromolecular material.Radiation modified polyolefinic thermoplastic elastomer blending resin has good processing characteristics, processing units and processing condition only need adjust slightly can be on the production line of former PVC disposable transfusion device production Thermoplastic Elastomer, Olefinic disposable transfusion device, the cost of the two is suitable.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail, but the present invention is not limited to following embodiment.
Embodiment 1
Adopt Co-60 as irradiation source, with 90/10 (part by weight, down together) ethylene-propylene copolymer (P0280)/ethylene-acrylic acid copolymer (PRIMACOR
TM1430) (referring to table 1) carry out pre-irradiation and handle, irradiation dose is 50KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 190-230 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 75%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 2
Adopt the 3Mev rumbatron as irradiation source, with 80/20 ethylene-butene copolymer (EXACT
TM4011)/ethylene-ethyl acrylate copolymer (AMPLIFY
TMEA100) (referring to table 1) carry out pre-irradiation and handle, irradiation dose is 60KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 190-230 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 80%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 3
Adopt Co-60 as irradiation source, with 70/30 ethylene-propylene copolymer (P0680)/ethylene-vinyl acetate copolymer (SEETEC
TMVA600) (referring to table 1) carry out pre-irradiation and handle, irradiation dose 200KGy, pre-irradiation thing in kneader in 100 ℃ of processing 15 minutes.Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 160%, and processing characteristics is relatively poor; Material through kneader reaction processing can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding, and there is gel particle the product part.
Embodiment 4
Adopt the 3Mev rumbatron as irradiation source, with 60/40 ethylene-butene copolymer (EXACT
TM4011)/and ethylene-styrene copolymer (ES16) (referring to table 1) carries out pre-irradiation to be handled, and irradiation dose is 40KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 190-230 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin and modulus, flexural strength and modulus, shock strength significantly improves 63%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 5
Adopt Co-60 as irradiation source, with 50/50 ethene-hexene copolymer (EXACT
TM3139)/and ethylene-styrene copolymer (ES24) (referring to table 1) carries out pre-irradiation to be handled, and irradiation dose is 20KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 190-230 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 58%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 6
Adopt the 3Mev rumbatron as irradiation source, with 90/10 ethylene-octene copolymer (Engage
TM8999)/and ethylene-styrene copolymer (ES30) (referring to table 1) carries out pre-irradiation to be handled, and irradiation dose is 10KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the shearing force field effect, and temperature of reaction is controlled in 180-220 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 49%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 7
Adopt Co-60 as irradiation source, with 85/15 ethylene-propylene copolymer (P0280)/ethylene-vinyl acetate copolymer (SEETEC
TMVA600) (referring to table 1) carry out pre-irradiation and handle, irradiation dose is 100KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 170-210 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 120%, and processing characteristics is relatively poor; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 8
Adopt the 3Mev rumbatron as irradiation source, with 80/20 ethylene-butene copolymer (EXACT
TM4011)/and ethylene-styrene copolymer (ES16) (referring to table 1) carries out pre-irradiation to be handled, and irradiation dose is 150KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 160-200 ℃ the scope; Compare radiation modified polyolefinic thermoplastic elastomer blending resin with matrix resin. tensile strength improve 80%, processing characteristics descends a little; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 9
Adopt Co-60 as irradiation source, 75/25 ethylene-propylene copolymer (P0680)/ethylene-styrene copolymer (ES24) (referring to table 1) is carried out pre-irradiation handle, irradiation dose is 80KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 150-190 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 40%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 10
Adopt the 3Mev rumbatron as irradiation source, with 70/30 ethylene-butene copolymer (EXACT
TM4011)/and ethylene-styrene copolymer (ES30) (referring to table 1) carries out pre-irradiation to be handled, and irradiation dose is 90KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 200-240 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 56%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 11
Adopt Co-60 as irradiation source, with 65/35 ethene-hexene copolymer (EXACT
TM3139)/ethylene-acrylic acid copolymer (PRIMACOR
TM1430) (referring to table 1) carry out pre-irradiation and handle, irradiation dose is 2KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in the response type twin screw extruder, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled in 230-250 ℃ the scope; Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin improves 33%, and processing characteristics is good; The material of extruding through the forcing machine reaction can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
Embodiment 12
Adopt the 3Mev rumbatron as irradiation source, 55/45 ethylene-propylene copolymer (P0680)/ethylene-styrene copolymer (ES40) (referring to table 1) is carried out pre-irradiation handle, irradiation dose is 0.2KGy; Polyolefinic thermoplastic elastomer blending resin after pre-irradiation is handled is sent in Ban Buli (Banbury) mixing machine, and it is crosslinked to carry out fusion under the effect of shearing force field, and temperature of reaction is controlled at 260 ℃; Time is 5 minutes.Compare with matrix resin, the tensile strength of radiation modified polyolefinic thermoplastic elastomer blending resin increases by 12%, and processing characteristics is good; Material through Banbury mixing machine reaction processing can be made into disposable transfusion device Perfusion drip funnel and transfusion catheter through moulding.
The Thermoplastic Elastomer, Olefinic matrix resin that table 1 embodiment is adopted
| Resin | Producer | The trade mark | Co-monomer content (wt%) | Melting index MI (190 ℃, g/10min) | Density (g/cm 3) |
| Ethylene-propylene copolymer | Jilin Petrochemical | P0280 | 26 | 1.2 | 0.880 |
| Ethylene-propylene copolymer | Jilin Petrochemical | P0680 | 26 | 3.6 | 0.870 |
| Ethylene-butene copolymer | Exxon Mobil | EXACT TM 4011 | 24 | 2.2 | 0.888 |
| Ethene-hexene copolymer | Exxon Mobil | EXACT TM 3139 | 26 | 7.5 | 0.900 |
| Ethylene-octene copolymer | Dupont company | Engage TM 8999 | 26 | 0.5 | 0.863 |
| Ethylene-acrylic acid copolymer | Dow company | PRIMACOR TM 1430 | 9.7 | 5.0 | 0.938 |
| Ethylene-ethyl acrylate copolymer | Dow company | AMPLIFY TM EA100 | 15 | 1.3 | 0.930 |
| Ethylene-vinyl acetate copolymer | Hyundai company | SEETEC TM VA600 | 28 | 6.0 | 0.950 |
| Ethylene-styrene copolymer | Dow company | ES16 | 16 | 5.0 | 0.9420 |
| Ethylene-styrene copolymer | Dow company | ES24 | 24 | 6.0 | 0.9445 |
| Ethylene-styrene copolymer | Dow company | ES30 | 30 | 7.0 | 0.9454 |
| Ethylene-styrene copolymer | Dow company | ES40 | 40 | 8.0 | 0.9486 |
In sum, the present invention adopts gamma-radiation or electron beam that polyolefinic thermoplastic elastomer blending resin is carried out pre-irradiation and handles, make polyolefinic thermoplastic elastomer blending resin further crosslinking reaction under molten state of handling through pre-irradiation with the reaction method for processing then, the modified polyolefinic thermoplastic elastomer blending resin for preparing has favorable mechanical performance and processing characteristics.And adopt the above-mentioned new modified polyolefinic thermoplastic elastomer blending disposable transfusion device of having developed.Investigation shows, it is at the early-stage that China carries out the replacement research of medical polyvinyl material up to now.By carrying out this research work; can shorten China and the developed country gap aspect medical macromolecular materials research, development and application greatly; promote the update and the technical progress of China's medical macromolecular materials, contribute for ensureing people ' s health and preserving the ecological environment.
It is resin dedicated with modified polyolefinic thermoplastic elastomer blending that the present invention has developed more safe and reliable disposable transfusion device.Adopt gamma-radiation or electron beam that polyolefinic thermoplastic elastomer blending resin is carried out cross-linking radiation, can improve the mechanical property of polyolefinic thermoplastic elastomer blending resin.
Claims (5)
1, a kind of preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin comprises the steps:
(1) adopts gamma-radiation or electron beam that polyolefinic thermoplastic elastomer blending resin is carried out pre-irradiation and handle, obtain the pre-irradiation polyolefinic thermoplastic elastomer blending resin;
(2) with the pre-irradiation polyolefinic thermoplastic elastomer blending resin that obtains, employing is reacted method for processing in response type twin screw extruder, kneader or Ban Buli mixing machine, make it crosslinked under molten state, prepare modified polyolefinic thermoplastic elastomer blending resin;
Described polyolefinic thermoplastic elastomer blending resin is that weight percent is the blend of the ethene-alpha-olefin copolymer of 50%-90% and the ethene of 10%-50%-single substituted alpha-alkene multipolymer.
2, the preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin according to claim 1 is characterized in that described ethene-alpha-olefin copolymer is a kind of in ethylene-propylene copolymer, ethylene-butene copolymer, ethene-hexene copolymer or the ethylene-octene copolymer resin; Specifically,
1) radiation modification ethylene-propylene copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min;
Density: 0.870-0.880g/cm
3
2) radiation modification ethylene-butene copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min;
Density: 0.880-0.905g/cm
3
3) radiation modification ethene-hexene copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min;
Density: 0.883-0.903g/cm
3
4) radiation modification ethylene-octene copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min;
Density: 0.863-0.902g/cm
3
Described ethene-single substituted alpha-alkene multipolymer is a kind of in ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer or the ethylene-styrene copolymer resin; Specifically,
5) radiation modification ethylene-acrylic acid copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min;
Density: 0.850-0.965g/cm
3
6) radiation modification ethylene-ethyl acrylate copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-100g/10min;
Density: 0.900-0.930g/cm
3
7) radiation modification ethylene-vinyl acetate copolymer matrix resin
Melt flow rate (MFR) scope: 0.5-400g/10min
Density: 0.926-0.969g/cm
3
8) radiation modification ethylene-styrene copolymer matrix resin
Melt flow rate (MFR) scope: 0.01-50g/10min
Density: 0.942-1.021g/cm
3
3, the preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin according to claim 1 is characterized in that temperature of reaction is controlled in the 100-260 ℃ of scope.。
4, the preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin according to claim 1 is characterized in that described gamma-radiation is irradiation source with Co-60, and dosage is 0.2-200KGy.
5, the preparation method of radiation modified polyolefinic thermoplastic elastomer blending resin according to claim 1 is characterized in that described electron beam is irradiation source with the rumbatron, and dosage is 0.2-200KGy.
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| CN100497463C (en) * | 2006-03-24 | 2009-06-10 | 中国科学院长春应用化学研究所 | Process for preparing functional poly propylene material |
| CN102782036B (en) | 2009-12-29 | 2016-01-27 | 美国圣戈班性能塑料公司 | Flexible pipe and the method for the formation of this material |
| AU2013271955B2 (en) | 2012-06-06 | 2016-09-29 | Saint-Gobain Performance Plastics Corporation | Thermoplastic elastomer tubing and method to make and use same |
| CN115449116B (en) * | 2021-12-23 | 2024-02-27 | 苏州瑞高新材料股份有限公司 | Electron irradiation process for polyolefin thermosetting elastomer |
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